L6376 STMicroelectronics, L6376 Datasheet - Page 12

• Manufacturer Part Number: L6376
• Description: Power Switch ICs - Power Distribution 0.5A Intel Power Sw
• Manufacturer: STMicroelectronics

Specifications of L6376

• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Package / Case: Power PDIP-20
• Mounting Style: Through Hole
• Lead Free Status / Rohs Status: Details

Programmable diagnostic delay
9
10
12/18
Typical waveforms for short circuit operation are shown in
If both the ON DELAY and the OFF DELAY pins are grounded the non dissipative over
current protection is inhibited and the outputs in short circuit remain on until the thermal
shutdown switch OFF the whole device. In this case the short circuit condition is not
signalled by the DIAG pin (that continues to signal the under voltage and over temperature
conditions).
Programmable diagnostic delay
The current limiting circuits can be requested to perform even in absence of a real fault
condition, for a short period, if the load is of capacitive nature or if it is a filament lamp (that
exhibits a very low resistance during the initial heating phase).
To avoid the forwarding of misleading — i.e. short diagnostic pulses in coincidence with the
intervention of the current limiting circuits when operating on capacitive loads — the
activation of the diagnostic can be delayed with respect to the intervention of one of the
current limiting circuits.
This delay can be defined by an external capacitor (C
DELAY pin and ground.
Reset input
An external reset input R (pin 18) is provided to simultaneously switch OFF all the outputs:
this signal (active low) is in effect an asynchronous reset that keeps the outputs low
independently from the input signals. For example, this reset input can be used by the CPU
to keep the outputs low after a fault condition (signaled by the DIAG pin).
DON
) connected between the ON
Figure
5.
L6376